Is there any meter movement on the Reaper Track when pressing a key on the CT-460?

In addition:

To make things easier in Kontakt Player: set the Input channel of the loaded instrument to [OMNI] - so the loaded Kontakt instrument receives MIDI from all channels.
See the screenshots in the last section Defining a MIDI Port and Channel for your KONTAKT Instrument at the bottom: https://support.native-instruments.c...ler-in-KONTAKT

The first section in the article Activating your MIDI Device is only relevant for using Kontakt Player Standalone. When using the Kontakt Player as plugin, the MIDI and Audio settings are managed in Reaper's Preferences.